At the small \(\Gamma \)  side, the KSL locates in the region \(0\le \Gamma /|K|\le 0.08\) . The KSL with \(K<0\)  has a ferromagnetic instability. At larger \(\Gamma \)  with \(0.08<\Gamma /|K|<0.25\) , a ferromagnetic(FM) phase is obtained [1]}, [2]}, [3]}.
